diff --git a/tests/fate-run.sh b/tests/fate-run.sh
index c898695033..5841b0c413 100755
--- a/tests/fate-run.sh
+++ b/tests/fate-run.sh
@@ -328,13 +328,14 @@ if [ $err -gt 128 ]; then
     test "${sig}" = "${sig%[!A-Za-z]*}" || unset sig
 fi
 
-if test -e "$ref" || test $cmp = "oneline" ; then
+if test -e "$ref" || test $cmp = "oneline" || test $cmp = "grep" ; then
     case $cmp in
         diff)   diff -u -b "$ref" "$outfile"            >$cmpfile ;;
         rawdiff)diff -u    "$ref" "$outfile"            >$cmpfile ;;
         oneoff) oneoff     "$ref" "$outfile"            >$cmpfile ;;
         stddev) stddev     "$ref" "$outfile"            >$cmpfile ;;
         oneline)oneline    "$ref" "$outfile"            >$cmpfile ;;
+        grep)   grep       "$ref" "$errfile"            >$cmpfile ;;
         null)   cat               "$outfile"            >$cmpfile ;;
     esac
     cmperr=$?
diff --git a/tests/fate/filter-audio.mak b/tests/fate/filter-audio.mak
index 32787a764c..f71fb52b51 100644
--- a/tests/fate/filter-audio.mak
+++ b/tests/fate/filter-audio.mak
@@ -219,6 +219,18 @@ fate-filter-hdcd: CMD = md5 -i $(SRC) -af hdcd -f s24le
 fate-filter-hdcd: CMP = oneline
 fate-filter-hdcd: REF = 5db465a58d2fd0d06ca944b883b33476
 
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-false-positive
+fate-filter-hdcd-false-positive: SRC = $(TARGET_SAMPLES)/filter/hdcd-false-positive.flac
+fate-filter-hdcd-false-positive: CMD = md5 -i $(SRC) -af hdcd -f s24le
+fate-filter-hdcd-false-positive: CMP = grep
+fate-filter-hdcd-false-positive: REF = HDCD detected: no
+
+FATE_AFILTER_SAMPLES-$(call FILTERDEMDECENCMUX, HDCD, FLAC, FLAC, PCM_S24LE, PCM_S24LE) += fate-filter-hdcd-detect-errors
+fate-filter-hdcd-detect-errors: SRC = $(TARGET_SAMPLES)/filter/hdcd-encoding-errors.flac
+fate-filter-hdcd-detect-errors: CMD = md5 -i $(SRC) -af hdcd -f s24le
+fate-filter-hdcd-detect-errors: CMP = grep
+fate-filter-hdcd-detect-errors: REF = detectable errors: [1-9]
+
 FATE_AFILTER-yes += fate-filter-formats
 fate-filter-formats: libavfilter/tests/formats$(EXESUF)
 fate-filter-formats: CMD = run libavfilter/tests/formats